Sundel, M., & Sundel, S. S. (2005). Behavior change in the human services: Behavioral and cognitive principles and applications (5th ed.). Sage Publications.
Chicago (17e ed.) BronvermeldingSundel, Martin, en Sandra Stone Sundel. Behavior Change in the Human Services: Behavioral and Cognitive Principles and Applications. 5th ed. Thousand Oaks, Calif: Sage Publications, 2005.
MLA (9e ed.) BronvermeldingSundel, Martin, en Sandra Stone Sundel. Behavior Change in the Human Services: Behavioral and Cognitive Principles and Applications. 5th ed. Sage Publications, 2005.
Let op: Deze citaties zijn niet altijd 100% accuraat.